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3 Sheets-Sheet 1.

(NoModeL) K. WEHSE. STOVE.

Patented June 12, 1888.

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(No Moel.) 3 Sheets-Sheet K. WEHSE.

STOVEL No. 384300. Patented June 12, 1888.. !G I (No Model.) 3 Sheets-Sheet 3.

K. WEHSE.

STOVE.

No. 384,300. Patented June 12, 1888.

.Im 3122611 /z UNITED STATES PATENT rrrong KARL XVEHSE, OF LANDEGK BATH, SILESIA, GERMANY.

STOVE.

SPECIPICATION orming part of Letters Patent No. 384300, clated ;finne 12, 1888.

Application filed June 10, 1836.

The stove which forms the object of the present invcntion contains various inprove ments over the stovcs now in use.

The invention consists in the features of construction hereinafter more fully pointed out.

In the aceompanying drawings, Figure 1 represents a vertical section; Fig. 2, a partial horizontal section on line :m Fig. l. Figs. 3, 4, and 5 represent modifieations of the cupola or top part of the stove. Fig. G represents the frame ior supporting the grntebars on an enlargcd scale. Fig. '7 rcprescnts a vertical section at right angle to Fig. 1. Fig. S shows a cross-section, and Fig. 9 a plan, of the gratehars, on un enlarged scale.

The heorth consists of the fire-pot Z and the feed-tube Zwhich communicate in the lower part of the stove.

c is the lire-door opening, N the ash-pit, and E the grate-bars, with cylindrical bars F, (in the draw''gs a grate in two sections, partly horizontal, purtly inclined, is shown,) which serve exclusively ss au entrance for the conbastion-air froni the ash-pit N and for raking the fire.

d is an opening at the hack of the stove, which corresponds with the opening e, so that their axes will be iu the same horizontal line. It serves for the escape of smoke while light ing the fire, and that the smoke and conhustion-gases may arrive and pass directly to the chiuney. They produce a warm-air current and give to the chimney a sufficient draft, and prevent an iutcrruption in the escape of the products of combustion. The chinney is placed with this opening in such a position that the same can he seen through the front opening, c, of the store, to fncilitate the cleaning of the same.

The fire-pot Z is at the inside entirely covered with fireclay or its equivalent, B. This lining extends for the entire vertical and conical section of the heating-tube f, and continues on into the cylindrical tube g. The cupola' or ealotte i is also lined with fire-eloy. This lining of fire-clay, in general of equal thickuess, is increased a little at those places which are Serial No. 2041398. (No model.)

eXposed to the strongest heat--that is to say, on the cireunference of the opening of the grate E. In Fig. l this incrensed thiehness of thelining is shown at h and 73.

The inner faces of the partitions of the firepot are arranged in a vertical nianncr of a form represented in Fig. 2. They pass froni the circular section of the fire-pot to the rectangular form of the feed-tube.

m is a low cross-wall, Fig. 1, the lower part forming nn arch, which supports and maintains the fire-clay lining B' oi' the vertieal partition of the feed-tube and of the conical part of the stove. It serves also to augment the durability and solidity of the partitions forning the oven in general. Besides this it has for its purpose to form a prolongw tion of the general partition toward the hottom, and it enters the fire-pot, so that the fuel cannot fall toward the hase ol' the cone. The layer of the fucl will, therefore, remain always so small in the fire-pot that the conbustihle is brought into contact with so niuch of air that it oxidizcs in the best possible way. The aroh m prevents also the entranee of any conhustible into the escapeiuc (l. esides the consideration for the solidity of the parts of the stove, this form has been chosen to facilitate the better examination, through the opening e, of the escnping-fiue (Z p.

a The gases, smoke, and conhustion rise from the fire-pot Z into the prolongated eonical iue f, and from there through the cylindrical fine of fire-clay g into the calottcor cupolai,wl1ieh serves as a refiector. From this lattcr the gases go in a revcrsed way and desccnd verti cally toward the lower part of the heating apparatus through a number of llucs, A, with Vertical outer ribs, into a circular fine, D, which surrounds the osh-pit. From here the gases pass into the fine n, 'from where they flow, passing through the hack part of the stove, into the ilues 0 to the height of the hack opening, d, ol" thc Iire-pot, and enter finally inte the tine p, which eonnects dircctl y with the chininey.

The firegratc E consists either of cylindrical bars F, as shown in Figs. land G, or of bars provided with teeth around their circumference, as shown in Figs. 8 and 9, placed in a horizontal and inclined position.

The ends of the bars F are reduccd to form journals G. i These journalsrest in the bars or frame H, provided with slots Gr' to receive the journal G. These bars are supported by crosspieces I, or other suitable frame' work. The surface of the grate bars F may be made smooth, as shown in Figs. 1 and 6; but the same can also be provided with noses or projections of a dovetail form, as shown in Fgs. 8 and 9, and so placed that those of one bar cone between the projections of the adjoining bars, so that these bars while raking the fire will turn without interfering with the adjoining bars.

The object of the p rojections is to scrape off the drosses which will be attached to them by a strong fire. The ends of the bars are made slightly conical at the end to reduee the frietion while tu rning against the supports.

The isolation of the grate froni the walls of the stove renders it possible for the free admission of the combustion air to the fuel around the space between the grate and the walls of the stove, and by this arrangement the sides of the fire-place are protected from the hcat of the fire.

The circular bars facilitate the fall of small because they have no flat face upon which such particles could remain.

The feeding-tube W is placed vertieally in front of the conical fire-fiuef. It is composed of astraight rcar and of two straightside walls, the latter being joined in front to the curved body of the stove. The rear wall is curved forwardly at its upper end, as shown. If it is desired to increase the capacity of the feedtube, the side walls may be turned outward, so as to diverge toward the front, as indicated by the dotted lines Z' in Fig. 2.

Parallel and outside of the back of the feedtube XV a plate, 0-', is placed about one centimeter distance, which begins on the upper edge of the feed-tube at 9- and reaches down to the combustion-chanber at m. It extends the entire breadth of the back partition of the feed-tube, and is held in place by means of pins or studs fast to the back wall of the feedtube, and protects the same against any pressure exerted bythe fuel while being introduced through the opening or door of the feed-tube. This sheet covers also the small transversal arehed wall 'm and corresponds at its lower end in shape with the arch oi' the wall m.

This metallic sheet 1-' has for its purpose that air can enter and pass through the space thus created to the combustion-chamber under the arch m. The air enters here partially warmed, and so produces, mixed with the smoke and the products of conbustion, the smoke burning or consuming. The entrance of this passage at r is provided with a valve, r or similar arrangenent, scrving as a regulator for the admission of air. (See Fig. 1.) The air on its entrance at 7' into this fiue has a high temperature, because it is taken directly from the radiated heat of the stove, and it would be yet warner if it could be drawn directly from the hot-air outletR of the cupola. This warm air passes through the flue, and is still further heated by radiating heat of the inner funnehf. The opening or door of the feed-tube is hermetically closed, and remains open only during the operation of filling. The valve at a" serves for the rcgulation of the air admisson, and is entirely independent of the door of the filling-tube.

The heating-funnel consists of the conicalshaped fire-fiuefand the upper cylindrical fine, g. It forms one of the essential parts of the stove, besides the reversed air-current and the grate.

The combustion-gases rise to the top of calotte i, and pass from there in a eompressed state along theinterior of it, heating thus the calotte or cupola, which has on the inner side au entire lining of fire-clay, This eupola forms a hemisphere, the lower end of which s continued or extended in a cylinder of sheetiron without fire-clay, which reaches downward some distance of the fire-brick cylinder 13 On that part of its circumference where it meets the fecding-tube it is provided with a corresponding cut-out. This cylindriealprolongation ofsheet-iron of the calotteis then beveled at a right angle, which joins the fire-brck cylinder 13' and surrounds the latter like a concentric sleeve, and is continued downward, forming thus a cylinder, K, surrounding and supporting the fire-brick cylinders B and B'. lVith the continuation of the cupola or refieetor of the gases begins the indirect heating part of the stove, which is forned by a number of heating-mbes A, ribbed on their outside. (See Fig. 2.)

The heating-tubes are of cast-iron or sheetiron, provided with longitudinally-placed radial ribs, which end in a horizontal annular channel or fine, D, Fig. 7. They are not placed on front and back on account of the feed-tube W and the smoke-fine d being placed there.

The channel or annular fiue D is provided IOO IIO

on its front where the ash-pan is placed with r a suitable recess and reaches with its upper end about to the height of the horizontal grate, and extends downward to the bottom of the stove. It may be supported by a double T- iron attached to its bottom, and which rests upon a perforated plate, L, below the ash-pit. This flue D connccts at the back of the stove with a fiue, n. From the flue n, conneeting with the annular channel D, rises flue 0 to the height of the flue for the direct escaping smoke, and is there connected with the horizontal fiue p, which passes directly into the chimney.

The ash-pit N corresponds in shape with the form of the fire-pot, but is larger on its inside, not being provided with a fire-clay lining.

Its

Its front is provided with a door, y, which closes hermetically. It has such a depth that that the sides of the nsh-holder may not come against the walls of the ash-bole its upper edge s provided with horizontal projections. lhe ash-holder N' is provided at the bottom with small projccting feet or bars, upon which lt rests, to allow the free circnlation of air through the plate L into the ash pit and around the ash-holder.

To use the outer or atmospheric air for the c rculntion and eonbustion, this plate is entirely closed except three holcs, which receive the tubes P P P'. Two ot' these tubes, P', (only one is shown in the drawings in Fig.1,) ere connected to the plate at the side under the fire-grate, and the third, P, behind the sh-pit is connected with the surrounding casng All three t-ubes are united to one pipe M, in which a vulve, &(., M', is m'runged for reguhting the amount of ente'ing air.

For the eirculntion ol' aii-,two cnsings, U U ore provided, placed conccntrieally around the stove, resting upon an extension ofplate L. Phe exteror U" serves :it the same time as exteror casng of the stove. These easings rest upon au extension of the plote L, and are attnehed ut the front to the side pnrtitions ofthe feed-tube.

'ljhe air from the pi pe P passes between these cesngs and between the inner casing, U', and

p the firepot of the stove, es indicated by arrows, and is heuted by seid fire-pot and above the cupoln or culotte i suceessively to u very high degree. This current of air passes then between the casing T and around the periphery ot' the cupolui toward the opening Q in top of the cesiug T, and pesses then between the ensings T U,cscaping finally through openings Pton the bottom of these easings into the compnrtmcnt to be warmed.

In the pi pe a (lampeud, is provided, which closes the end of the :due d. hen the fire is first ignited, this damper must he opened by turning the same to allow the eombustiongases and smoke to escape through the horizontal fine (l directly into the chimney. ?Vilen the fire is well lighteththe danper o is moved so as to close the passage d, when the smoke and gasesnre freed to pass through the fiues f, g, and A, in the munner above described.

hat I claim is- The combination, in a furnnce having the nsual grate, fire-pot, direct and indirect fineeseapes, and ash-pot provided with {tir-inlets, of the feed-tube XV, the air-feed located in the rear thereofnnd eommuniceting with the firepot, the conicnl tlue F, forned by the depending wells B', and Situated directly over the fire-pot, the direct flue (l, inline with feed-door c, the indirect line-escape, the ue g, forming a continuntion of tine f, the cnpola i, surmounting said fiues and feed XV, (livingines in communication with said eupoln, smokeehamber D, surrounding the osh-pit and the indirect smoke-escape fiue communicating with the letter, e double hotair ehember formed by the casing T U 'U' U and opening Q, seid chamber commnnienting :it its lower end with air-supply pipe M, the pipo I? and the exit-pipe lt, all Operating snbstantinlly as and for the purpose Set forth.

In tcstimony whereof I hereunto sign my name, in the presence of two snhscrihing witnesses, this Qlst day of March, 1886.

KARL WEHSE.

XVitnesses:

RICHARD KLAPPER, AUGUST Bonsn. 

